The annulus configuration changes after mitral repair measured by three dimensional echocardiography
Zhang Haibo
Meng Xu
Guo Yong
He Yihua
Han Jie
Li Yan
Abstract：Objective To investigate the configuration changes after mitral repair by three dimensional echocardiography in the operation room.Methods Serious mitral prolapse without other cardiac disorders were chosen.The routine two dimensional echocardiography was performed after admission.3 dimensional echocardiography was performed before the operation in the operation room.The mitral annulus configuration,the mitral prolapse and regurgitation grades were examined.The mitral annulus diameter,the distance between commisure1 and commisure2,distance between anterior and posterior annulus,the annulus height and the non-planer angel were measured.The primary repair strategies were evaluated.The same procedure was done after the surgery.Results Totally 36 cases were enrolled,fully consistent with the intraoperative findings had 26 cases (72.2％),partially coincide had 6 cases (16.7％),the gap was larger in 4 cases (11.1％).The mitral annulus appears consistently as saddle shape during the whole movement phase,the lowest height was at the commissure part and the highest part was at the annulus.During the systolic phase the non-planer angel between anterior and posterior annuls appeared bigger than in diastolic phase.Disc ring circumference the disc ring diameter and disc ring longitudinal diameter before and after operation was (12.4 ± 2.4) cm,(7.5 ± 0.5) cm; (34.8 ± 2.7) mm,(21.8 ± 1.8) mm; (34.9 ± 3.1) mm,(20.4 ± 2.1) mm,respectively.The difference of disc ring circumference the disc ring diameter and disc ring longitudinal diameter before and after operation were statistically significant (P ＜ 0.05).The annulus circumference,transverse,longitudinal diameters decreased compared with before the surgery.Preoperative mitral transverse diameter and longitudinal diameter values are almost the same,indicating that at this time the mitral annulus was in nearly round shape.However the longitudinal/transverse ratio reached 93％ after surgery also implied that the mitral annulus configuration recovery after annuloplasty.After the surgery the annulus height decreased from (8.4 ± 0.6) mm to (3.0 ± 0.1) mm while the annular height/transverse diameter ratio decreased from 24％ to 14％.Non-planar angle between the anterior and posterior mitral annuls increased from (135 ± 14) degrees to (145 ± 13) degrees after surgery(P ＜ 0.05).Conclusion The mitral annulus configuration may change after artificial annulus applied in the repair surgery.
Keywords：Mitral diseaseArtificial annulusThree dimentional echocardiography
Publication Date：2014-01-01
Online Publishing Date：2026-09-14(First online date of this platform, not the publication date of the document)
Pages：5( 483-487 )